Add attachments of a feature along with attributes to PDF exported using arcpy in python

[AbhinavReddy1]

How to Add attachments of a feature along with attributes to PDF exported using arcpy in python.

[DanPatterson_Retired]

PDFDocument—ArcPy | ArcGIS Desktop under

updateDocProperties ({pdf_title}, {pdf_author}, {pdf_subject}, {pdf_keywords}, {pdf_open_view}, {pdf_layout})

pdf_open_view

beyond the example in

PDFDocumentOpen—ArcPy | ArcGIS Desktop 

which show to open with thumbnails, instead of attachments.